Brass alloys are metallic materials composed primarily of copper and zinc, with the zinc content typically ranging from 5% to 45%. By adjusting the copper–zinc ratio, manufacturers can tailor a wide variety of mechanical, physical, and chemical properties, making brass one of the most versatile engineering and decorative materials.
Key properties
- Good corrosion resistance – Especially in dry environments, freshwater systems, and non-aggressive atmospheres.
- Excellent formability and castability – Suitable for complex shapes and precision components.
- Aesthetic appeal and pleasant feel – With a gold-like shine, brass is often used in design and decorative applications.
- Natural antimicrobial properties – Ideal for sanitary and hygiene-sensitive environments.
- Good electrical conductivity – Enabling use in various electrical components and connectors.
Alloying additions
- Brass properties can be further enhanced by adding other elements:
- Lead – Improves machinability (e.g., free-cutting brass)
- Tin – Increases corrosion resistance, especially in marine environments
- Aluminium – Enhances strength and weather resistance
Typical applications
- Mechanical engineering – Gears, fittings, valves, bushings
- Electrical engineering – Terminals, connectors, switch parts
- Furniture and architecture – Decorative trims, handles, lighting fixtures
- Jewelry and watchmaking – Casings, clasps, fine design components
- Sanitary industry – Faucets, pipe connectors, plumbing systems
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